unsafe.Offsetof(heapStatsDelta{}.inHeap),
	unsafe.Offsetof(heapStatsDelta{}.inStacks),
	unsafe.Offsetof(heapStatsDelta{}.inPtrScalarBits),
	unsafe.Offsetof(heapStatsDelta{}.inWorkBufs),
	unsafe.Offsetof(lfnode{}.next),
	unsafe.Offsetof(mstats{}.last_gc_nanotime),
	unsafe.Offsetof(mstats{}.last_gc_unix),
	unsafe.Offsetof(workType{}.bytesMarked),
}

// AtomicVariables is the set of global variables on which we perform

type stackWorkBufHdr struct {
	_ sys.NotInHeap
	workbufhdr
	next *stackWorkBuf // linked list of workbufs
	// Note: we could theoretically repurpose lfnode.next as this next pointer.
	// It would save 1 word, but that probably isn't worth busting open
	// the lfnode API.
}

// Buffer for stack objects found on a goroutine stack.
// Must be smaller than or equal to workbuf.
type stackObjectBuf struct {
	_ sys.NotInHeap

}

const PreemptMSupported = preemptMSupported

type LFNode struct {
	Next    uint64
	Pushcnt uintptr
}

func LFStackPush(head *uint64, node *LFNode) {
	(*lfstack)(head).push((*lfnode)(unsafe.Pointer(node)))
}

func LFStackPop(head *uint64) *LFNode {
	return (*LFNode)((*lfstack)(head).pop())
}
func LFNodeValidate(node *LFNode) {
	lfnodeValidate((*lfnode)(unsafe.Pointer(node)))
}

func Netpoll(delta int64) {

}

const (
	spanSetBlockEntries = 512 // 4KB on 64-bit
	spanSetInitSpineCap = 256 // Enough for 1GB heap on 64-bit
)

type spanSetBlock struct {
	// Free spanSetBlocks are managed via a lock-free stack.
	lfnode

	// popped is the number of pop operations that have occurred on
	// this block. This number is used to help determine when a block
	// may be safely recycled.
	popped atomic.Uint32

			return nil
		}
		return EACCES
	}

	var fmode uint32
	if uint32(uid) == st.Uid {
		fmode = (st.Mode >> 6) & 7
	} else {
		var gid int
		if flags&_AT_EACCESS != 0 {
			gid = Getegid()
		} else {
			gid = Getgid()
		}

		if uint32(gid) == st.Gid || isGroupMember(int(st.Gid)) {
			fmode = (st.Mode >> 3) & 7
		} else {
			fmode = st.Mode & 7
		}
	}

	if fmode&mode == mode {

			}
		}

		// Assign attributes.
		for _, a := range start.Attr {
			handled := false
			any := -1
			for i := range tinfo.fields {
				finfo := &tinfo.fields[i]
				switch finfo.flags & fMode {
				case fAttr:
					strv := finfo.value(sv, initNilPointers)
					if a.Name.Local == finfo.name && (finfo.xmlns == "" || finfo.xmlns == a.Name.Space) {
						if err := d.unmarshalAttr(strv, a); err != nil {

		}
		return EACCES
	}

	var fmode uint32
	if uint32(uid) == st.Uid {
		fmode = (st.Mode >> 6) & 7
	} else {
		var gid int
		if flags&AT_EACCESS != 0 {
			gid = Getegid()
		} else {
			gid = Getgid()
		}

		if uint32(gid) == st.Gid || isGroupMember(int(st.Gid)) {
			fmode = (st.Mode >> 3) & 7
		} else {
			fmode = st.Mode & 7
		}
	}

// Internally, the GC work pool is kept in arrays in work buffers.
// The gcWork interface caches a work buffer until full (or empty) to
// avoid contending on the global work buffer lists.

type workbufhdr struct {
	node lfnode // must be first
	nobj int
}

type workbuf struct {
	_ sys.NotInHeap
	workbufhdr
	// account for the above fields
	obj [(_WorkbufSize - unsafe.Sizeof(workbufhdr{})) / goarch.PtrSize]uintptr
}

		if !vf.IsValid() {
			// The field is behind an anonymous struct field that's
			// nil. Skip it.
			continue
		}

		switch finfo.flags & fMode {
		case fCDATA, fCharData:
			emit := EscapeText
			if finfo.flags&fMode == fCDATA {
				emit = emitCDATA
			}
			if err := s.trim(finfo.parents); err != nil {
				return err
			}

	name      string
	file      string
	line      int32
	startLine int32
}

type itab = abi.ITab

// Lock-free stack node.
// Also known to export_test.go.
type lfnode struct {
	next    uint64
	pushcnt uintptr
}

type forcegcstate struct {
	lock mutex
	g    *g
	idle atomic.Bool
}

// A _defer holds an entry on the list of deferred calls.